UTERATURE CITED 



Abbott, Clinton Gilbert. 



1929. Watching long-crested jays. Condor, vol. 31, pp. 124-125. 



Adams, Ernest. 



1898. Notes on the plain titmouse. Osprey, vol. 2, pp. 81-82. 



Addicott, Alice Baldwin. 



1938. Behavior of the bush-tit in the breeding season. Condor, vol. 40, pp. 



49-63. 

 Aiken, Charles Edward Howard, and Warren, Edwaw) Royal. 



1914. Birds of El Paso County, Colorado. Colorado College Publ, gen. ser.. 

 No. 74 (sci. ser., vol. 12, No. 13, pt. 2), pp. 497-603. 



Aldous, Clarence Moroni. 



1937. Eastern crows nesting on or near the ground. Auk, vol. 54, pp. 393-394. 



Aldous, Shaler Eugene. 



1942. Toe white-necked raven in relation to agriculture. U. S. Fbh and 

 Wildlife Res. Rep. 5, 56 pp. 

 AXDRicH, John Warren, and Nutt, David C. 



1939. Birds of eastern Newfoundland- ScL Publ. Qeveland Mus. Nat. Hist., 



vol. 4, pp. 13-42. 

 Alexander, Frank McDaniel. 



1930. Notes on the birds of south central Kansas. Wilson Bull., vol. 42, pp. 



241-244. 

 Alexander, Horace Gundry. 



1927. A list of the birds of Latium, Italy, between June 1911 and February 

 1916. Compiled from the notes and letters of the late C. J. Alexander. 

 Ibis, ser. 12, vol. 3, pp. 659-691. 

 .Allen, Francis Henry. 



1910. Warbling song of the Hudsonian chickadee. Auk, voL 27, pp. 86-87. 

 1919. The aesthetic sense in birds as illustrated by the crow. Auk, vol. 36, 

 pp. 112-113. 

 American Ornithologists' Union. 



1931. Check-list of North American birds, ed. 4. 



1944. Nineteenth supplement to the American Ornithologists' Union check-list 



of North American birds. Auk, vol. 61, pp. 441-464. 



1945. Twentieth supplement to the American Ornithologists' Union check-list 



of North American birds. Auk, vol. 62, pp. 436-449. 

 Anderson, Rudolph Martin. 



1907. The birds of Iowa. Proc. Davenport Acad. Sci., vol. 40, pp. 125-417. 

 Anthony, Alfred Webster. 



1889. New birds from Lower California, Mexico- Proc. California Acad. 



Sci., ser. 2, vol. 2, pp. 73-82. 

 1893. Birds of San Pedro Martir, Lower California. Zoe, vol, 4, pp. 228-247. 

 Attwater, Henry Philemon. 



1892. List of birds observed in the vicinity of San Antonio, Baxter County, 

 Texas. Auk, vol. 9, pp. 337-345. 

 Audubon, John James. 



1842. The birds of America, vol. 4. 



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